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| Mirrors > Home > ILE Home > Th. List > mullid | Unicode version | ||
| Description: Identity law for multiplication. Note: see mulrid 8329 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 8278 |
. . 3
| |
| 2 | mulcom 8314 |
. . 3
| |
| 3 | 1, 2 | mpan 428 |
. 2
|
| 4 | mulrid 8329 |
. 2
| |
| 5 | 3, 4 | eqtrd 2271 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8277 ax-1cn 8278 ax-icn 8280 ax-addcl 8281 ax-mulcl 8283 ax-mulcom 8286 ax-mulass 8288 ax-distr 8289 ax-1rid 8292 ax-cnre 8296 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4132 df-iota 5340 df-fv 5388 df-ov 6091 |
| This theorem is used by: mullidi 8335 mullidd 8350 muladd11 8466 1p1times 8467 mulm1 8734 div1 9041 recdivap 9056 divdivap2 9062 conjmulap 9067 expp1 11004 recan 11898 arisum 12290 geo2sum 12306 prodrbdclem 12363 prodmodclem2a 12368 demoivreALT 12566 gcdadd 12787 gcdid 12788 cncrng 15015 cnfld1 15018 |
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